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Finding the Fourth Proportional to 118,043.11, 162,899.47 and 64,328.11

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Solution

The fourth proportional to 118,043.11, 162,899.47 and 64,328.11 is: 88,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,043.11 : 162,899.47 = 64,328.11 : x
  2. Step 2: Convert to fraction form
    118,043.11/162,899.47 = 64,328.11/x
  3. Step 3: Cross multiply
    118,043.11x = 162,899.47 × 64,328.11
  4. Step 4: Simplify right side
    118,043.11x = 10,479,015,025.10
  5. Step 5: Solve for x
    x = 10,479,015,025.10/118,043.11
  6. Step 6: Final answer
    x = 88,772.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.